הִתְנַבֵּא וְלֹא יָדַע מָה הִתְנַבֵּא, נִיבָּא וְאֵינוֹ יוֹדֵעַ מַה נִּיבָּא

ביטוי (אנגלית)

He prophesied and did not know what he prophesied, he prophesied and did not know what he prophesied.

הגדרה (אנגלית)

He said something that became clear as a prophecy or prediction that came true. He said something to the point that the thing finally came true.

("And Pharaoh's daughter said to her, 'Take this child,'" said Rabbi Hama son of Rabbi Hanina: "She prophesies, but she does not know what she prophesies about." - Sota 12b, and so: "The land of Goshen - prophesies, but he does not know what he prophesies about: they will end up making it like a pond that has no fish in it." - Rashi, in the beginning of Ma 18, and why should I consider both of them?)